Households in the United States use more appliances and electronics than ever before. For example, according to the U.S. Energy Information Administration (EIA), energy use for air conditioning has doubled since 1980. The EIA reports that US homes use approximately 41% of energy for space heating, 26% for electronics, lighting and other appliances, 20% for water heating, 8% for air conditioning and about 5% for refrigeration.
In terms of commercial buildings, the EIA reports that the top five energy-consuming building categories use about two-thirds of the energy consumed by all commercial buildings. These buildings include retail and service buildings (20%); office buildings (17%); educational facilities (13%) health care facilities (9%); and lodging facilities (8%).